I would suggest either attaching a file/screen shot or using snipping tool to produce an image of any correspondence from Steam and Microsoft to support your claim/issue.
I appreciate the information. I raised a ticket using that link at the beginning of the week, including a screenshot from Microsoft stating that Gameflip revoked my Xbox Live after 1 month of use, and the response I received was that I completed the transaction and was therefore not entitled to a refund. It’s a little frustrating that there’s only a 3 day window when the 12 month code I purchased worked for 1 month out of the 12 and then was revoked and I’m now out the money I spent due to no fault of my own.